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15 

 

Section 4 - ADJUSTMENTS & REPAIR 

 

WARNING 

DO NOT attempt any maintenance, adjustments or 
service with engine and blade running. STOP engine 
and blade. Disconnect spark plug wire and secure 
away from spark plug. Engine and components are 
HOT. Avoid serious burns, allow sufficient time for all 
components to cool. 

 

4.3  DRIVEN AND DRIVE DISC SERVICE 

If the mower does not propel itself properly, See 
Figure 4.6. Check for the following problems: 

 

 

 

FIGURE 4.6 

 

1.  Grease on drive disc causing slippage. 
2.  Broken or disconnected drive spring. 
3.  Driven disc is out of adjustment. 
4. Driven disc rubber is worn - does not contact 
drive disc properly. 
5.  Worn Poly-V Belt or engine drive belt. 

 
NOTE: If any of the above (1 thru 5) are causing 
problems, service as follows: 
 

4.3.1.  Cleaning Drive Disc & Driven Disc 
If oil or grease on the drive disc or driven disc is 
causing slippage, clean discs as follows: 
1.  Wipe away any oil or grease with a clean cloth. 
2. Use either an approved grease solvent or hot, 
soapy water to clean drive disc or driven disc. 
3.  Rinse components with clean water. 
4.  Dry components with a clean cloth. 

 

4.3.2.  Drive Spring Repair/Replacement 
If drive spring is loose, reconnect as shown in Figure 
4.7. If spring is broken, replace with new spring. 

 
IMPORTANT: If machine drive system continues 
slipping see Trouble Shooting section. 

 

FIGURE 4.7 

 

4.3.3.  Driven Disc Adjustment 
If the drive disc and driven disc are clean and the 
mower drive is not making correct drive disc and driven 
disc contact, adjust the driven disc as follows: 
 
1.  Place ground speed control in the number six 
speed position.  See Figure 4.8. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

FIGURE 4.8 

 

(Continued on Next Page)  

DRIVEN DISC 
& RUBBER 
RING 

POLY-V-BELT 

DRIVE 
DISC 

DRIVE 
SPRING 

ENGINE 
DRIVE 
BELT 

USE NEEDLE 
NOSE PLIERS 
TO INSTALL 
DRIVE SPRING 

DRIVE 
SPRING 

MOVE GROUND SPEED 
CONTROL TO SIX SPEED 
POSITION 

SIXTH SPEED 
POSITION 

SIXTH 

FIRST SPEED 
POSITION 

FIRST 

Summary of Contents for WMRP216517B

Page 1: ...wer R Recycling Model P Self Propelled Model 17 Series Designation 21 21 Cutting Width B Briggs Stratton Engine Thank you for buying a SNAPPER Product Before operating your Walk Behind read this manua...

Page 2: ...extreme CAUTION when changing directions on slopes DO NOT mow steep slopes or other areas where stability or traction is in doubt 3 Use extra care with grass catchers or other attachments these affect...

Page 3: ...rate engine in enclosed areas Engine exhaust gases contain carbon monoxide a deadly poison MAINTENANCE AND STORAGE 1 DO NOT store mower or fuel container inside where fumes may reach an open flame spa...

Page 4: ...V Belt 12 Service Annually 12 Engine 12 Air Filter 12 Engine Oil 12 Storage Procedure 12 SECTION 4 ADJUSTMENTS AND REPAIR 13 19 Mower Blade Replacement 13 Blade Sharpening 13 14 Wheel Drive Control Ad...

Page 5: ...above Figure 1 1 shows the essential parts of the SNAPPER WALK BEHIND MOWERS It is recommended that all operators of the mower become thoroughly familiar with the controls parts and operation of the...

Page 6: ...d after refueling Refer to Engine Owners Manual for specifications 2 1 6 Clean exterior surfaces of cutting deck and engine of any accumulation of spilled fuel dirt grass oil etc Keep engine air intak...

Page 7: ...r handle can be adjusted as follows 1 Loosen the lower nuts on each lower handle as shown in Figure 2 5 2 Move upper mower handle up or down until the desired position is achieved 3 Tighten the lower...

Page 8: ...eel latches to improve recycling performance INSTALLATION of GRASS BAG ADAPTER Optional Accessory on Some Models STEP 1 Install the grass bag adapter and secure to the side and top of the deck with th...

Page 9: ...ire to the grass bag Tie the bag slider to the top wire Fold bag opening into a Z and pull bag into slider See Figure 2 9 FIGURE 2 9 B Position grass bag between handles See Figure 2 10 Install grass...

Page 10: ...n and both bolts protruding through holes in the side of the deflector Secure nuts to the side of deflector Tighten nuts securely See Figure 2 13 FIGURE 2 13 2 9 INSTALLATION of RECYCLING COVER Option...

Page 11: ...s are HOT Avoid serious burns allow sufficient time for all components to cool 1 Refer to Engine Manual for proper oil specifications and procedures 2 For simplest cleanest oil change loosen lower han...

Page 12: ...evered or belt strands exposed If worn or damaged replace belt before operating mower 3 2 5 CHECK TRANSMISSION POLY V BELT 1 Visually check poly v belt for cracking fraying severed or belt strands exp...

Page 13: ...either tip See Figure 4 1 4 2 Replace with new blade WARNING DO NOT use a cutting blade that shows signs of excessive wear or damage Refer to Section MOWER BLADE REPLACEMENT for proper blade inspecti...

Page 14: ...1 8 clearance between the inside of the spring hook and the inside of the clutch cable eye with the wheel drive control released See Figure 4 5 FIGURE 4 5 2 To adjust unhook upper spring from cable e...

Page 15: ...s causing slippage clean discs as follows 1 Wipe away any oil or grease with a clean cloth 2 Use either an approved grease solvent or hot soapy water to clean drive disc or driven disc 3 Rinse compone...

Page 16: ...ewed from operators position Then retighten the connector hex nut securely See Figure 4 10 Move ground speed control to the first speed position then back to the sixth speed position Recheck the 1 8 m...

Page 17: ...MPORTANT The bearing on these M series machines is staked into the thrust plate The bearing will have to be driven out with a mallet and a large punch A new bearing with four retaining screws will hav...

Page 18: ...earing 5 Carefully install new O ring over the outside of the new bearing 6 Install bearing holder and secure with screws 7 Install 3 8 hex lock nut FIGURE 4 14 4 4 BELT SERVICE On self propelled mowe...

Page 19: ...ck washer See Figure 4 16 6 Remove the belt cover located under deck 7 Lift the drive disc up and remove worn belt 8 Loop one end of new belt over engine pulley and insert the other end through slot i...

Page 20: ...f Traction 2 Engine drive belt broken requires replacement 2 Replace engine drive belt 3 Engine drive belt has jumped off of the pulley 3 Reinstall belt onto pulley Check for damage Self Propelled Mod...

Page 21: ...wer Deck Clean Debris Accumulation Page 10 X Transmission Grease Check Grease Level Pages 9 X X Periodic Grease Check Pages 10 X Drive Disc Check for Wear Damage Replacement Page 12 15 X Change oil ev...

Page 22: ...ginal purchase date SNAPPER will not be responsible for any installation cost incurred The battery warranty only covers original equipment batteries and does not cover damage to the battery or machine...

Page 23: ...23 PRIMARY MAINTENANCE...

Page 24: ...24 PRIMARY MAINTENANCE...

Page 25: ...25 PRIMARY MAINTENANCE...

Page 26: ...26 PRIMARY MAINTENANCE...

Page 27: ...one Number____________________________________________________ It is very important that you register your purchase with Snapper to ensure warranty coverage Please mail your product registration card...

Page 28: ...s If you have any questions about your Snapper product contact your local authorized Snapper dealer or contact Snapper Customer Service at Snapper McDonough GA 30253 Phone 1 800 935 2967 COPYRIGHT 200...

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